Waltee s



W. S. SAYER-S;

Ventilator.

No. 227,586 Patented May 11, I880.

a a d Q WITNESSES C INVENTOB:

ATTORNEYS.

I N-PEIERS, PHOTO-LIYHUGRAEHER, WASHINGTON. DV 0.

UNITED STATES PATENT OFFICE.

WALTER S. SAYERS, GUELPH, ONTARIO, CANADA.

VENTILATOR.

SPECIFICATION forming part of Letters Patent No. 227,586, dated May 11,1880.

Application filed January 31,1880.

To all whom it may concern:

Be it known that I, WALTER SooT'r SAY- ERS, of Guelph, in the Provinceof Ontario and Dominion of Canada, have inventeda new and ImprovedVentilator, of which the following is a specification.

Figure 1 is a front elevation of the device attached to a window. Fig. 2is a sectional side elevation of the same.

Similar letters of reference indicate corresponding parts.

The object of this invention is to provide a simple and convenientventilator for rooms.

The invention is an improvement in the class of ventilators consistingof a box or tube provided with valves and adapted to be used inconnection with a window, either above or below the same. The inventionrelates to the construction and arrangement of valves in such box ortube, whereby the ingress and egress of air is regulated.

In the drawings, A represents a Windowframe; B, the upper sash; G, thetop of the cornice. D is the box, preferably rectangular and extendingthe whole width of the window; and said box is open at the top, betweenthe cornice and window-frame, as shown at a, and opening to the outsideof the window, as shown at I), the top of the window-frame forming thetop of the box. i

E E are rectangular valves or storm-guards, hinged or pivoted upon rods0 c, that are placed longitudinally one above another in the box D nearthe front opening, I). The purpose of these valves E is to regulate theescape of air from the room and to close the opening 1) against stormsand rain.

In that part of the box D which projects inside of the window-frame ishinged the valve E, which extends longitudinally the whole length of thesaid box. To this valve F is attached acord, G, which passes upwardthrough a staple, pulley, or other device, d, and hangs down by the sideof the window-frame, and by means of this cord G the said valve F can be5 adjusted to regulate the admission of air through the saidventilating-box D.

In attaching this ventilating device to a window, I ordinarily cut downthe upper window-sash, to afford room for the box, as shown in thedrawings; but it is evident that window sashes and frames can be soconstructed that the device can be applied without making any alterationin them, and that part of the box D which extends into the room may befashioned in ornamental designs, and forms essentially a part of thecornice.

In the case of circular top Windows whose said circular top is fixed Ipropose to put the ventilator in the upper sash, just below the circularsash, and in some instances I propose to place the ventilating device inthe windowsash with its outer face flush with the outer face of thesash, and in some instances with its inner face flush with the innerface of the sash.

I do not claim, broadly, pivoted valves for regulating the admission ofair to a room or other space; and I am aware that a hinged valveoperated by a cord has been employed to regulate the admission of air toa room through a passage or tube; but

What I do claim is-- In a ventilating attachment for windows,

the right-angular guards E, hinged at their apices, and arranged oneabove another in the box or passage D, as shown. and described, so thatsaid guards will close andopen automatically when the pressure of theair-current exceeds a certain limit, as specified.

. WALTER SCOTT SAYERS. Witnesses: J QHN S. MOFFATT,

THos. LAW'RANCE.

